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Type: Posts; User: KTP

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  1. Large lot of cnc stuff, ballscrews, ways, motors, drives must go asap!

    Down to the wire and must move the last bit of cnc parts which could be used to make equipment.

    Really need this gone Sunday (5/22) local pickup only, eastside Seattle. Any offer considered.
    ...
  2. Re: How to get rid of a large amount of cnc components (balllscrews, rails, motors)?

    Seattle area. What is HGR?
  3. How to get rid of a large amount of cnc components (balllscrews, rails, motors)?

    We are having to move and downsize in a hurry and I need to empty about 2 rooms of mostly new cnc component parts. Things like THK and NSK ground ballscrews and nuts, THK, NSK and other brand rails...
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    Shizuoka B-3V cnc bedmill

    Selling a Shizuoka B-3V cnc mill. This machine has box ways on Y and Z (dovetail on X) and has travels of approximately 28"X, 14"Y, 20"Z. It is a very sturdy cnc milling machine and weighs...
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    How much flex is in a Taig, Sherline, SX2?

    If you put a dial indicator in the spindle of a Taig, Sherline, or SX2 and position it against the milling table, then put 10 pounds of force at that point, how much will the indicator move?

    I am...
  6. Re: 1/2" shank dovetail cutter in Taig ER16 headstock?

    Ok, good points. I am used to my Shizuoka B-3V bedmill which is where I have used these cutters. I guess considering just the spindle motor on it weighs more than 4 complete Taigs I am a bit...
  7. Re: 1/2" shank dovetail cutter in Taig ER16 headstock?

    Yes, I am tending to agree, it is just that I have about 6 of these cutters unused and they were probably $$$ each new. Hate to toss them. Might try to turn down the shaft to 3/8" if it is just...
  8. Re: New machine build, a bit unconventional RV mill

    Oh that is eventually stage two for us also! Moving from the house to the RV is stage one and then moving from RV to bluewater sailing on a 40 footer. I want to use this mill or some variation in...
  9. New machine build, a bit unconventional RV mill

    This is rev #3 of my starts on building a small benchtop mill. I am 99.9% sure I will be going with this design as we are moving and lose the Shizuoka cnc bedmill I have in the garage. This mill...
  10. Re: 1/2" shank dovetail cutter in Taig ER16 headstock?

    Hi thanks. I am using timing belt and gear pulleys to couple the motor to the spindle, not the Taig pulleys and belt. The motor is actually closer to 400 watts (1.5N-m running torque) and spins...
  11. 1/2" shank dovetail cutter in Taig ER16 headstock?

    I am building a cnc mill and using a Taig spindle (coupled to a 300 watt brushless motor). The spindle is ER16 rated at 10,000 rpm. The largest collet is 3/8".

    I have several 45 and 60 degree...
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    perhaps a beam shutter switch?

    perhaps a beam shutter switch?
  13. Sticky: I have an 8 foot long 2 inch diameter ballscrew...

    I have an 8 foot long 2 inch diameter ballscrew and nut you could have if that one doesn't work :-)
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    It looks like a fixed gantry moving bed to me. ...

    It looks like a fixed gantry moving bed to me. You can see the extended linear ways coming out the back of the bed.
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    I wouldn't call some of the past Hardinge stuff...

    I wouldn't call some of the past Hardinge stuff crap.

    I would also rather have a Matsuura VMC than a Haas. Have you seen some of their 5 axis machines? Pure sex.
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    I looked for a local hackerspace just now and...

    I looked for a local hackerspace just now and there are none within 50 miles. This thread got me interested in helping a local one but is sad I don't have one available. I would be interested in...
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    The thin steel (0.030) you might be able to do...

    The thin steel (0.030) you might be able to do somewhat cheap with a used fiber laser (not fiber coupled laser diodes) by IPG or similar. I can already cut through 0.015 without oxygen using a 10...
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    China has gone after the small household stuff...

    China has gone after the small household stuff and hobby industry. How many Chinese cars or jumbo jets do you see in the USA or Europe? I am not sure I have ever seen a Chinese made car.

    China...
  19. One more change. I calculated the 2 foot by 3...

    One more change.

    I calculated the 2 foot by 3 foot by 1 inch thick plate of 6061 T651 would not be enough for all of the parts so I will be ordering some Alimex cast and ground aluminum plate from...
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    China is sort of where the USA was in the early...

    China is sort of where the USA was in the early 1900s. Not many regulations (environmental or worker). Both of our cats were killed by melamine laced cat food that came from a factory in China...
  21. Ok, a little more thought and refinement. I...

    Ok, a little more thought and refinement.

    I decided to narrow the bottom baseplate such that the z axis column supports (shown in blue) would attach from the sides at all points. This eliminates...
  22. I think the slides would be a bit sticky....I...

    I think the slides would be a bit sticky....I seem to recall they are just Teflon or UHMW plastic pads that ride in the slots on the 8020.

    Regular linear rails and carriages are cheap enough. ...
  23. Taking some advice from you guys I reconfigured...

    Taking some advice from you guys I reconfigured the drawing to have X and Y use the 500mm travel linear modules and Z use the 300mm travel module. This did have the advantage of making the Z axis...
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    To get a 4'x8' that can do metal cutting for...

    To get a 4'x8' that can do metal cutting for under $2000 you would have to build it plus scrounge almost every part instead of buying it new.
  25. This morning I changed out the test setup for a...

    This morning I changed out the test setup for a plate and section of bar that is actually bolted to the slide table instead of c-clamped to the plate. The problem must have been flex in the c-clamps...
  26. Flawed setup! Before breaking down the test rig,...

    Flawed setup! Before breaking down the test rig, I removed the plate and tool steel test bar from the linear slide and bolted the test bar directly to the ~800 pound table on the Shizuoka mill. I...
  27. Ok I realized I could use a different lever bar...

    Ok I realized I could use a different lever bar for placing weights than the measurement bar, as long as they were parallel to each other. This allowed me to take the measurements at the 10 inch...
  28. I understand what you are getting at. I do...

    I understand what you are getting at.

    I do think that determining the characteristics of the slides themselves will help a design. If the slides deflect 0.1" with a 20 pound load then it would...
  29. Excellent points wizard. I think the reason I...

    Excellent points wizard. I think the reason I want to go with the automation slides vs a ground up build using discrete ballscrews and linear bearings is so much of the work has been done for me in...
  30. Hi Andrew, thanks for the reply and tips. All...

    Hi Andrew, thanks for the reply and tips.

    All of the slides have a brake on the motor, so the slides are locked from movement when the power is off.

    I don't think I need 20 inches of Z, but...
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